86th United States Congress
House of Representatives

District
Vacator
Reason for change
Successor
Date of successor's formal installation
Missouri 4th
George H. Christopher (D)
Died January 23, 1959
William J. Randall (D)
March 3, 1959
New York 43rd
Daniel A. Reed (R)
Died February 19, 1959
Charles Goodell (R)
May 26, 1959
Ohio 6th
James G. Polk (D)
Died April 28, 1959
Ward Miller (R)
November 8, 1960
Hawaii Territory At-large
John A. Burns (D)
Hawaii achieved statehood.
Seat eliminated August 21, 1959
Seat eliminated August 21, 1959
Hawaii At-large
New seat
Hawaii achieved statehood August 21, 1959
Daniel Inouye (D)
August 21, 1959
Illinois 12th
Charles A. Boyle (D)
Died November 4, 1959
Vacant
Not filled this term
Iowa 4th
Steven V. Carter (D)
Died November 4, 1959
John H. Kyl (R)
December 15, 1959
Pennsylvania 17th
Alvin Bush (R)
Died November 5, 1959
Herman T. Schneebeli (R)
April 26, 1960
New York 23rd
Isidore Dollinger (D)
Resigned December 31, 1959
Jacob H. Gilbert (D)
March 8, 1960
Pennsylvania 18th
Richard M. Simpson (R)
Died January 7, 1960
Douglas H. Elliott (R)
April 26, 1960
North Carolina 12th
David M. Hall (D)
Died January 29, 1960
Roy A. Taylor (D)
June 25, 1960
Washington 3rd
Russell V. Mack (R)
Died March 28, 1960
Julia Butler Hansen (D)
November 8, 1960
Pennsylvania 18th
Douglas H. Elliott (R)
Died June 19, 1960
J. Irving Whalley (R)
November 8, 1960
North Dakota At-large
Quentin N. Burdick (D)
Resigned August 8, 1960, after becoming U.S. Senator
Vacant
Not filled this term
Massachusetts 5th
Edith Nourse Rogers (R)
Died September 10, 1960
Vacant
Not filled this term
Wyoming At-large
Edwin K. Thomson (R)
Died December 9, 1960
Vacant
Not filled this term
New York 5th
Albert H. Bosch (R)
Resigned December 31, 1960, after being elected judge of Court of Queens County
Vacant
Not filled this term

Question: In the 86th United States Congress, What date was the end of Richard M. Simpson's service, and who was his successor?
Answer: In the 86th United States Congress, Richard M. Simpson (R) served until January 7, 1960 and was succeeded by Douglas H. Elliott (R) on April 26, 1960, who served until June 19, 1960.